fill in the missing amounts in tables

Fill in the missing amounts in tables a) and b) below. CO Jan Feb Mar Apr Rent expense $ 100 $ 100 $ 150 Prepaid rent-start of month $ 300 $ 200 $ 100 Prepaid rent-end of month $ 200 $ 100 O Rent paid O $ 0 $ 150 Jan Feb Mar Apr Wage expense $ 400 $ 150 $ 300 Wages payable-start of month $ 300 $ 450 $ 450 Wages payable-end of month $ 450 $ 450 $ 900 Wages paid $ 200 $ 0 O